Well I think the two solutions I suggested would help... as I said it wont be a quick fix but the truth will catch on with enough people eventually if done right.
I genuinely believe City feel they did prove toe UEFA they have operated within the rules. I think it's obvious City have in the past tried to find ways around it but as long as they did so without breaking the rules laid out, there is no case to answer and that should be championed by all blues. Find away to beat the corrupt system and keep their hands clean, that's exactly what every other club is doing or wants to do.
As for letting the general football fan know, I've seen plenty of United fans admit why FFP was put in place, they already know. They hide behind "yeah but if you agree to the rules you have to follow them, everyone else is", the trouble with that is, they aren't following the rules because they think it's good for the game or any of that sugarcoated nonsense, they just know they couldn't outspend us without FFP in place.
I think pulling out of the CL would be the worst thing to do personally. It's not just about the money we get directly from it.